Fernandina Rice Rat,Nesoryzomys fernandinae("Extinct" in1980, Rediscovered during surveys in1995and1997,Ecuador,Galapagos, Vulnerable)
Rancho Grande Harlequin Frog,Atelopus cruciger("Extinct" in1982, Rediscovered in2003,Venezuela)
Gracilidris, a genus of dolichoderine ant thought to have gone extinct 15-20 million years ago was found inParaguay,Brazil, andArgentinaand described in2006.